This axial section of an adult female zebrafish is from the rostral part of the abdominal cavity, where the ovary takes approximately one third of the area, leaving space for the swim bladder and other internal organs. The proportion of ovary increases at more caudal sections, and the abdominal organs shown in this image (liver, pancreas, spleen, intestinal loops) are not or less abundantly present there. Major blood vessels in this section are